Flexible container

Abstract

Provided is a flexible container that can be easily opened. Provided is a flexible container for holding contents that includes an outer bag, an inner bag, a first binding member, and a lid. The outer bag includes a bottom surface portion in which a lower opening is formed. The inner bag is a tubular inner bag that is housed in the outer bag, configured to be filled with contents, and includes a discharge port portion. The discharge port portion forms a discharge path for discharging the contents and extends to a lower side of the bottom surface portion via the lower opening. The first binding member is tied around the discharge port portion to close the discharge path. The lid is attached to an outer side of the bottom surface portion to close the lower opening and cover the discharge port portion. The discharge port portion is narrowed to close the discharge path. The first binding member is tied around the discharge port portion to maintain a state in which the discharge port portion is narrowed. The lid is attached to the outer side of the bottom surface portion to cover the discharge port portion tied off with the first binding member.

1 . A flexible container for holding contents, comprising:
 an outer bag that comprises a bottom surface portion in which a lower opening is formed;   a tubular inner bag that is housed in the outer bag, configured to be filled with the contents, and comprises a discharge port portion that forms a discharge path for discharging the contents and extends to a lower side of the bottom surface portion via the lower opening;   a first binding member configured to be tied around the discharge port portion to close the discharge path; and   a lid configured to be attached to an outer side of the bottom surface portion to cover the discharge port portion,   wherein the discharge port portion is configured to be narrowed to close the discharge path,   the first binding member is configured to be tied around the discharge port portion to maintain a state in which the discharge port portion is narrowed, and   the lid is configured to be attached to the outer side of the bottom surface portion to cover the discharge port portion tied off with the first binding member.   
     
     
         2 . The flexible container according to  claim 1 ,
 wherein the discharge port portion is configured to be narrowed to close the discharge path and then folded back in one direction, or is configured to be folded back in one direction to close the discharge path and then narrowed,   the first binding member is configured to be tied around the discharge port portion to maintain a state in which the discharge port portion is folded back in one direction and narrowed, and   the lid is configured to be attached to the outer side of the bottom surface portion to cover the discharge port portion that is folded after being tied off with the first binding member.   
     
     
         3 . The flexible container according to  claim 1 ,
 wherein the flexible container is configured such that the discharge port portion in a state of being tied off with the first binding member hangs down from the bottom surface portion when the lid is removed from the bottom surface portion.   
     
     
         4 . The flexible container according to  claim 1 ,
 wherein the lid is configured to be attached to the bottom surface portion using a hook-and-loop fastener.   
     
     
         5 . The flexible container according to  claim 1 ,
 wherein the first binding member is a cord-shaped member that comprises a hook-and-loop fastener.   
     
     
         6 . The flexible container according to  claim 1 ,
 wherein the outer bag further comprises a discharge port cover that surrounds the discharge port portion,   the discharge port cover is fixed to the bottom surface portion to extend to the lower side of the bottom surface portion from the lower opening, and   the first binding member is fixed to the discharge port cover.   
     
     
         7 . The flexible container according to  claim 1 ,
 wherein the outer bag further comprises an upper surface portion in which an upper opening is formed, and   the inner bag further comprises a filling port portion that forms an introduction path for introducing the contents and extends to an upper side of the upper surface portion via the upper opening.   
     
     
         8 . The flexible container according to  claim 7 , further comprising
 a second binding member configured to be tied around the filling port portion to close the introduction path.   
     
     
         9 . The flexible container according to  claim 8 ,
 wherein the outer bag further comprises a filling port cover that surrounds the filling port portion,   the filling port cover is fixed to the upper surface portion to extend to the upper side of the upper surface portion from the upper opening, and   the second binding member is fixed to the filling port cover.   
     
     
         10 . The flexible container according to  claim 8 , further comprising
 a hooking member that is fixed to the second binding member or a portion in the vicinity of the center of an upper portion of the outer bag and is configured to be hooked to a suspending tool that suspends the flexible container from above.   
     
     
         11 . The flexible container according to  claim 1 ,
 wherein the contents are water-absorbent resin particles.   
     
     
         12 . A manufacturing method for manufacturing a flexible container for holding contents, comprising:
 providing an outer bag that comprises a bottom surface portion in which a lower opening is formed;   providing a tubular inner bag that is configured to be filled with the contents and comprises a discharge port portion that forms a discharge path for discharging the contents;   housing the inner bag in the outer bag such that the discharge port portion extends to a lower side of the bottom surface portion via the lower opening;   narrowing the discharge port portion to close the discharge path;   tying off the discharge port portion using a first binding member to maintain a state in which the discharge port portion is narrowed; and   attaching a lid to an outer side of the bottom surface portion to cover the discharge port portion tied off with the first binding member.   
     
     
         13 . The manufacturing method according to  claim 12 ,
 wherein the outer bag further comprises an upper surface portion in which an upper opening is formed,   the inner bag comprises a filling port portion that forms an introduction path for introducing the contents, and   housing the inner bag in the outer bag comprises housing the inner bag in the outer bag such that the filling port portion extends to an upper side of the upper surface portion via the upper opening.   
     
     
         14 . A manufacturing method for manufacturing a flexible container holding contents therein, comprising:
 manufacturing the flexible container using the manufacturing method according to  claim 13 ;   introducing the contents into the inner bag via the introduction path of the flexible container; and   closing the introduction path after the contents are introduced.   
     
     
         15 . A method for opening a flexible container holding contents therein, comprising:
 manufacturing the flexible container holding the contents therein using the manufacturing method according to  claim 14 ;   suspending the flexible container holding the contents therein;   removing the lid from the bottom surface portion to cause the discharge port portion tied off with the first binding member to hang down from the bottom surface portion; and   opening the discharge path by untying the first binding member from the hanging discharge port portion.   
     
     
         16 . The flexible container according to  claim 2 ,
 wherein the flexible container is configured such that the discharge port portion in a state of being tied off with the first binding member hangs down from the bottom surface portion when the lid is removed from the bottom surface portion.   
     
     
         17 . The flexible container according to  claim 2 ,
 wherein the outer bag further comprises a discharge port cover that surrounds the discharge port portion,   the discharge port cover is fixed to the bottom surface portion to extend to the lower side of the bottom surface portion from the lower opening, and   the first binding member is fixed to the discharge port cover.   
     
     
         18 . The flexible container according to  claim 3 ,
 wherein the outer bag further comprises a discharge port cover that surrounds the discharge port portion,   the discharge port cover is fixed to the bottom surface portion to extend to the lower side of the bottom surface portion from the lower opening, and   the first binding member is fixed to the discharge port cover.   
     
     
         19 . The flexible container according to  claim 4 ,
 wherein the outer bag further comprises a discharge port cover that surrounds the discharge port portion,   the discharge port cover is fixed to the bottom surface portion to extend to the lower side of the bottom surface portion from the lower opening, and   the first binding member is fixed to the discharge port cover.   
     
     
         20 . The flexible container according to  claim 5 ,
 wherein the outer bag further comprises a discharge port cover that surrounds the discharge port portion,   the discharge port cover is fixed to the bottom surface portion to extend to the lower side of the bottom surface portion from the lower opening, and   the first binding member is fixed to the discharge port cover.